Allow grpcio >= 1.48 (#26765)

The previously observed Python grpc warning / logspam seems to have been fixed for grpcio >= 1.48. And users would like to upgrade beyond grpcio 1.43 for better M1 support. However, grpcio 1.48 has not been released yet, so there is still a risk this change needs to be reverted if any problem is discovered later with Ray nightly + grpcio 1.48.

.buildkite/pipeline.yml

@@ -376,7 +376,6 @@
   commands:
     - cleanup() { if [ "${BUILDKITE_PULL_REQUEST}" = "false" ]; then ./ci/build/upload_build_info.sh; fi }; trap cleanup EXIT
     - RLLIB_TESTING=1 ./ci/env/install-dependencies.sh
-    - pip install "grpcio >= 1.28.1, <= 1.43.0"
     - bazel test --config=ci --config=asan $(./ci/run/bazel_export_options)
       --config=asan-buildkite
       --test_tag_filters=-kubernetes,asan_tests

python/ray/tests/test_runtime_env.py

@@ -439,7 +439,7 @@ def test_runtime_env_log_msg(
 
     good_env = runtime_env_class(pip=["requests"])
     ray.get(f.options(runtime_env=good_env).remote())
-    sources = get_log_sources(p, 5)
+    sources = get_log_sources(p, timeout=10)
     if local_env_var_enabled:
         assert "runtime_env" in sources
     else:

python/requirements.txt

@@ -12,7 +12,7 @@ cloudpickle
 filelock
 frozenlist
 gpustat == 1.0.0b1
-grpcio >= 1.28.1, <= 1.43.0
+grpcio >= 1.28.1, != 1.44.*, != 1.45.*, != 1.46.*, != 1.47.*
 jsonschema
 msgpack >= 1.0.0, < 2.0.0
 numpy >= 1.16

python/setup.py

@@ -285,7 +285,7 @@ if setup_spec.type == SetupType.RAY:
         "click >= 7.0, <= 8.0.4",
         "dataclasses; python_version < '3.7'",
         "filelock",
-        "grpcio >= 1.28.1, <= 1.43.0",
+        "grpcio >= 1.28.1, != 1.44.*, != 1.45.*, != 1.46.*, != 1.47.*",
         "jsonschema",
         "msgpack >= 1.0.0, < 2.0.0",
         "numpy >= 1.16; python_version < '3.9'",